The availability of solar radiation in a bow-type, air-inflated, double polyethylene covered greenhouse was studied. Solar total radiation (0.285 to 2.8 μm waveband) transmittance and the transmittance of photosynthetically active radiation (solar PAR, 0.4 to 0.7 μm) were compared. The comparisons were reported for measurements made both at the glazing and the plant canopy levels. A relationship was previously determined for the available solar total radiation (W m-2) and solar PAR (μmol s-1 m-2), transmitted through the atmosphere. This report focuses on the effects of glazing and structure on transmitting ambient solar radiation and the development of a relationship for transmittance of solar total radiation (W m-2) versus solar PAR (μmol s-1 m-2) between the two wavebands.
|Original language||English (US)|
|Number of pages||4|
|Journal||Transactions of the American Society of Agricultural Engineers|
|State||Published - Sep 1 1988|
ASJC Scopus subject areas
- Agricultural and Biological Sciences (miscellaneous)